Conjunctivitis, or pink eye, is a very common condition in children. It causes red, irritated and sticky eyes. It is usually caused by an infection (virus or bacteria), or allergies.


Key points to remember about conjunctivitis

  • conjunctivitis, or pink eye, is a common problem in children
  • it causes red, irritated and sticky eyes
  • an infection (virus or bacteria) is usually the cause 
  • symptoms can last from 2 days to 3 weeks
  • conjunctivitis spreads easily - good hygiene (especially hand washing) can help prevent the spread 
  • see your family doctor if your baby with conjunctivitis is less than 6 weeks old

What is conjunctivitis?

Conjunctivitis, or pink eye, is swelling and redness of the clear layer (conjunctiva). This layer covers the white part of the eye and the lining of the eyelids. Conjunctivitis is sometimes called 'sticky eye' or 'pink eye'.

Photo of child's eye with conjunctivitis

What causes conjunctivitis?

An infection or allergic reaction is the most common cause of conjunctivitis. 

An infection (virus or bacteria)

This is called infective conjunctivitis and is easily spread.

It spreads by direct contact with discharge from the eyes, nose or throat of someone with the infection. It can also spread by contact with contaminated fingers or objects.

An allergic reaction

This is called allergic conjunctivitis and will not spread to others. There will often be other signs of hay fever if the swelling and redness is the result of an allergy. Signs can include an itchy, runny nose and sneezing or a history of other allergic conditions. The eyes are itchy and watery.

What are the signs and symptoms of conjunctivitis?

Symptoms can appear from 2 to 10 days after getting infected. Once symptoms appear, they can develop quickly over 24 to 72 hours.

It can be difficult to tell whether an allergy, bacteria or a virus is causing the conjunctivitis as redness and swelling of the conjunctiva happen in them all. Many viruses can cause conjunctivitis and the symptoms may appear in a mild form together with any flu-like illness.

Symptoms can include:

  • redness of the white part of the eye
  • irritation or gritty feeling (like having sand in the eye)
  • discharge (may be clear, milky or pus-like)
  • more tears than usual
  • swelling of the eyelids
  • crusting of the eyelids or eyelashes
  • itchiness

If the tissue around the eye (skin and eyelids) becomes swollen, red and sore, the infection may be in the skin and underlying tissues (cellulitis) which can be much more serious than conjunctivitis. If this happens, take your child to your family doctor or after-hours medical centre as soon as possible.

How long could my child's conjunctivitis last?

Conjunctivitis can last from 2 days to sometimes as long as 3 weeks.

How can I care for my child's conjunctivitis at home

You can help relieve the symptoms of conjunctivitis.

Clear away the discharge

Gently clear away the discharge from the eye with a cotton ball soaked in warm water. Clean in one direction only, moving the cotton ball from the inside to the outside of the eye. Use a separate cotton wool ball for each eye.

Use a clean cold cloth

Using a clean cold cloth over closed eyes can relieve irritation and swelling.

Good hygiene can help prevent the spread of conjunctivitis

  • wash hands very carefully after contact with infected eyes
  • try to discourage your child from rubbing their eyes
  • wash pillowcases, face cloths and towels frequently and don't share them

When should I seek help for my child’s conjunctivitis?

You should see your family doctor if you are worried about your child's eyes, or if your child has:

  • moderate to severe eye pain
  • sensitivity to light (photophobia)
  • any blurred or reduced vision
  • any injury to the eye (such as being hit or scratched), or chemicals in the eye
  • a fever and is generally unwell
  • increased swelling, redness, and tenderness in the eyelids and around the eye

If your baby with conjunctivitis is less than 6 weeks old, you should always see your family doctor or midwife. An infection from bacteria in the birth canal can cause conjunctivitis in newborns. This can cause serious damage to your child's eyes and even their general health if it isn't treated urgently.

Your doctor may prescribe eye drops or ointment as it can be hard to tell whether your child has viral or bacterial conjunctivitis. 

Should I keep my child with conjunctivitis away from school or daycare?

Children with conjunctivitis should not go to school or daycare until their eyes are better. That's because the discharge from their eyes can pass the infection on to other children.

If your child's eyes are watery but not red, then they may have a blocked tear duct. 

Check the information on blocked tear ducts

This page last reviewed 08 November 2018.

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